NPPES file of Aug 9, 2026

Alyssa Marie O'Brien, RD

Registered Dietitian · Portland, OR

Alyssa Marie O'Brien, RD is a registered dietitian with a practice address in Portland, Oregon, and NPI 1023483799, issued on Dec 7, 2015. Check the license (Oregon LD-D-10184454, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1023483799
Name
Alyssa Marie O'Brien
Credential
RD
Primary taxonomy
Registered Dietitian 133V00000X
License number
LD-D-10184454 OR
Self-reported in NPPES; status is on the state search
Practice location
1111 NE 99TH Ave, Portland, OR 97220
Phone
(503) 963-2707
Enumerated
Dec 7, 2015
Record last updated
Jul 21, 2022
Fax
(503) 963-2802
Medicaid IDs
2086834 WA
500732181 OR
Medicare enrollment
Enrolled (PECOS I20170921001075); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest registered dietitian records → All 927 in Oregon → Look up another NPI →

Also registered at 1111 NE 99TH Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jeffrey Albaugh, MDGastroenterology Physician1184626087
  2. Kent Benner, MDGastroenterology Physician1649272451
  3. Sidharth Bhardwaj, M.D.Gastroenterology Physician1831156025
  4. William Bowerfind, MDPulmonary Disease Physician1801898663
  5. Harry Bray, MDGastroenterology Physician1790787554
  6. Sumner Brooks, MPH, RD, CSSDRegistered Dietitian1477833390

Verify Alyssa Marie O'Brien in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Oregon board licenses this profession
    Search for license LD-D-10184454    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Oregon license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. GI Nutrition NW, LLCPortland, OR

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Alyssa Marie O'Brien among 927 registered dietitian records in Oregon

Alyssa Marie O'Brien, RD is one of 927 registered dietitian records with a practice address in Oregon. 13% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 43% of them.

  • NPI issued2015 · 43% of these records are older, 54% newer
  • In a Medicare fileYes · 13% of these records are
  • In the CMS Doctors and Clinicians fileYes · 15% of these records are
  • Graduated2008 · median 2014 among the 138 with a school on file
  • Record last updated2022 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 133V00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Registered Dietitian providers in Oregon

There are 927 registered dietitian records in Oregon.

All 927 in Oregon → Every provider in Portland → Registered Dietitian nationwide →

The 8 registered dietitian records with the nearest ZIP codes

  1. Sumner Brooks, MPH, RD, CSSDPortland, OR 972201477833390
  2. Grace Clark-HibbsPortland, OR 972201518670025
  3. Catherine CrosbiePortland, OR 972201629920251
  4. Tricia Eisenbraun, RD, LDPortland, OR 972201558554360
  5. Jessie Hann, MS,RD,LD,CD,CDCESPortland, OR 972201104083492
  6. Kayci Adams, MS, RDN, LDNPortland, OR 972211326453762
  7. Iris Briand, RDNPortland, OR 972191871017723
  8. Mekayla Carlen, RDPortland, OR 972191508731134

Common questions

What is Alyssa Marie O'Brien, RD's NPI number?

Alyssa Marie O'Brien, RD's National Provider Identifier (NPI) is 1023483799, issued on Dec 7, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Alyssa Marie O'Brien, RD located?

The NPPES record lists a practice address at 1111 NE 99TH Ave, Portland, OR, 97220. Phone: (503) 963-2707. Providers update this record themselves, so call before visiting.

How can I verify Alyssa Marie O'Brien, RD's license?

NPPES lists Oregon license number LD-D-10184454, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.